Gotion High-tech Co., Ltd Solid-State Battery Technology Updates (2025)
As China’s leading power battery manufacturer, Gotion High-tech Co., Ltd (002074.SZ) has recently announced important breakthroughs in the field of quasi-solid and all-solid-state lithium-ion battery technologies.
All-Solid-State Battery (ASSB) Technology Breakthroughs
All-solid-state batteries (ASSB) are advanced energy storage devices that replace the flammable liquid or gel electrolytes found in traditional lithium-ion batteries with solid electrolyte materials.
This design enables significantly higher energy density, improved safety due to non-flammable materials, and longer lifespan by reducing issues like dendrite formation and thermal runaway.
ASSB are promising for high-end applications demanding compact, high-capacity, and reliable batteries for use in electric vehicles and portable electronics, although challenges remain in manufacturing cost, material stability, and achieving optimal ion transfer at the solid-solid interfaces.
In May 2025, Gotion High-tech Co., Ltd released a number of solid-state battery technology achievements at the Global Technology Conference demonstrating its leading position in next-generation lithium-ion battery technology.
The Company’s Gemstone all-solid-state battery represents the latest achievement in solid-state battery technology. The battery adopts sulfide solid electrolyte (SSE) technology and has achieved a number of key technological breakthroughs:
- Energy density: 350Wh/kg, an increase of more than 40% compared with mainstream ternary lithium-ion batteries.
- Single cell capacity: 70Ah, an increase of 150% compared with previous generations.
- Preload: decreased by 90%, significantly improving the mechanical properties of the battery
- Ionic conductivity: Ionic conductivity of the sulfide solid electrolyte increased by 60%.
Progress Towards Mass Production
Gotion High-tech Co., Ltd has built a pilot production line, an important milestone for the technology to move towards mass production:
- Capacity: designed capacity reaches 0.2GWh.
- Quality: Through key technologies such as high-precision coating, a yield rate of up to 90% is achieved.
- Equipment: The localisation rate of core equipment is 100%, and the line is 100% independently developed.
- Intellectual Property: 30+ patent applications.
- Safety: Gemstone ASSB has excellent safety performance and have passed many rigorous safety tests include a needle puncture test, hot box test (200℃), external short circuit test, overcharge test, extrusion test.
- Working Temperature Performance: the battery supports an ultra-wide operating temperature range of -40℃ to 100℃, and has a fast charging capability of 60% energy replenishment in 6 minutes.
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Quasi-Solid-State Battery (QSSB) Technology Breakthroughs
In addition to all-solid-state batteries, Gotion High-tech Co., Ltd has also developed G-Yuan quasi-solid-state batteries as a transitional product before ASSB.
Quasi-solid-state batteries (QSSB) bridge the gap between traditional liquid-based lithium-ion batteries and true all-solid-state batteries by employing a hybrid electrolyte system that combines both solid and liquid components.
This approach enhances ionic conductivity and electrode compatibility while significantly improving safety and thermal stability compared to conventional lithium-ion batteries.
Quasi-solid-state designs mitigate the interface and mechanical challenges of pure solid-state systems, offering high energy density, superior cycle life, and reduced risk of leakage or thermal runaway making them attractive for next-generation electric vehicles and devices where a balance of performance, safety, and longevity is crucial.
G-Yuan quasi-solid-state battery features:
- Energy Density: mass energy density exceeds 300Wh/kg, volume energy density is greater than 720Wh/L.
- Endurance: Able to achieve a pure electric car range of 1,000 kilometers.
- Safety: Even if punctured by a 3mm steel needle, it still maintains absolute safety of “no fire, no explosion”.
- Service Life: battery cell life of 10 years/500,000 kilometers.
Progress Towards Mass Production
Gotion High-tech Co., Ltd has planned to build a 12GWh quasi-solid-state battery production line, and the product has now entered the actual application test stage:
- Send samples to more than 5 customers for testing.
- More than 4 customers for on-board testing.
The total mileage of the “No. 001” sample equipped with G Yuan quasi-solid-state battery has exceeded 10,000 kilometers.
Gotion High-tech Co., Ltd chose sulfide solid electrolyte as the main technical route for its solid-state electrolyte. This is based on several technical advantages:
- Highest ion conductivity: The ion conductivity of sulfide electrolytes is the best among all solid-state electrolytes.
- Performance matching: Good matching with high-nickel ternary positive electrode and silicon-carbon negative electrode.
- Industry trend: Consistent with the technical routes of leading companies such as CATL and BYD.
Despite its technical advantages, the sulfide solid electrolyte route is faces some challenges:
- Cost issues: Sulfide electrolyte materials are currently expensive, which affects mass production.
- Process requirements: Higher requirements for sealing, production process, etc.
- Material maturity: Sulfide electrolyte materials are not yet mature enough.
In terms of reaching mass production, Gotion High-tech Co., Ltd has formulated a clear solid-state battery commercialisation schedule:
- 2025: Complete technical verification and vehicle installation road test.
- 2027: Achieve small-scale vehicle testing.
- 2030: Achieve large-scale mass production.
This schedule is consistent with other major companies in the industry:
- CATL: Small-scale mass production of all-solid-state batteries in 2027 Battery.
- BYD: Start mass demonstration and installation of all-solid-state batteries in 2027.
- Qingtao (Kunshan) Energy Development Group Co., Ltd: Achieve mass delivery in 2027.
Guoxuan High-tech’s solid-state battery technology has begun to be applied and verified in multiple fields:
- Passenger car field: G-Yuan quasi-solid-state battery can achieve 1,000 kilometers of endurance.
- Commercial vehicle application: G-Xing heavy truck standard box provides 12 years of ultra-long life.
- Special application: Cooperate with Ehang Intelligent to develop eVTOL aircraft power system.
Gotion High-tech Co., Ltd has also applied solid-state battery technology to the energy storage field and launched the Qianyuan Intelligent Storage 20MWh energy storage battery system with a design life of up to 25 years.
Concluding thoughts
Gotion High-tech Co., Ltd’s solid-state lithium-ion battery technology represents the company’s strategic layout in the next generation of battery technology. Through the strategy of “all-solid-state and quasi-solid-state battery dual-line parallel”, the company has not only ensured the advancement of technology, but also taken into account the feasibility of commercialisation.
As the technology continues to mature and the cost gradually decreases, Gotion High-tech Co., Ltd’s solid-state batteries are expected to start small-scale installation in 2027 and achieve large-scale mass production in 2030, providing safer and more efficient power solutions for the new energy vehicle industry.
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GDNM provides commentary on how energy transition minerals contribute towards the decarbonisation and electrification of the global economy, with a particular focus on the lithium-ion battery and rare earths supply chains.
GDNM founder, Mr Brendan Jephcott is an Australian who has worked in the global mining sector for more than 13 years, of which his experience covers precious metals, nonferrous metals, ferrous metals, base metals, bulk commodities, rare earths, and the lithium-ion battery industry.
For the last 9 years Mr Jephcott has focused on the burgeoning new energy industry, participating in cross-border transactions in buy-side and sell side roles, cultivating a global business network ranging from upstream resource companies, midstream intermediate product producers, and downstream consumers such as gigafactories and auto companies.